331 results found
    1. Evolutionary Biology

    The developmental relationship between teeth and dermal odontodes in the most primitive bony fish Lophosteus

    Donglei Chen et al.
    Teeth and dermal odontodes diverge from the same set of founder odontodes, demonstrating they are modified subsets of the same system, and both oral and dermal epithelial have patterning capacity.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    The global antigenic diversity of swine influenza A viruses

    Nicola S Lewis et al.
    Swine populations worldwide are sporadically infected by influenza viruses from humans and birds leading to geographically heterogeneous swine influenza virus populations that pose epizootic and pandemic threats.
    1. Evolutionary Biology

    Rampant tooth loss across 200 million years of frog evolution

    Daniel J Paluh et al.
    Teeth are maintained in two amphibian groups (caecilians and salamanders) but were lost in frogs over 20 times independently, a higher incidence of edentulism than any other major vertebrate group.
    1. Developmental Biology
    2. Evolutionary Biology

    The alternative regenerative strategy of bearded dragon unveils the key processes underlying vertebrate tooth renewal

    Lotta Salomies et al.
    Analysis of bearded dragon model reveals a novel tooth replacement strategy that demonstrates the critical importance of epithelial patterning, cell migration, and putative stem cell functional specialization in tissue regeneration.
    1. Evolutionary Biology

    The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa

    Paul HGM Dirks et al.
    Independent dating techniques have established that the H. naledi fossils are between 236 and 335 thousand years old, indicating that small-brained hominins with relatively primitive body shapes co-existed with our early ancestors in Africa.
    1. Evolutionary Biology

    Oldest skeleton of a fossil flying squirrel casts new light on the phylogeny of the group

    Isaac Casanovas-Vilar et al.
    Flying squirrels may have originated earlier than previously thought and remained unchanged for almost 12 million years.
    1. Developmental Biology
    2. Evolutionary Biology

    Developmental variability channels mouse molar evolution

    Luke Hayden et al.
    The nature and extent of developmental variation seen between mouse strains and genetically identical individuals explain why the first upper molar evolves along preferred path in murine rodents.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities

    Evan T Saitta et al.
    Subterranean fossil bone hosts a living microbiome different from the surrounding sediment without evidence of original protein preservation.
    1. Evolutionary Biology

    A Bayesian approach to dynamic homology of morphological characters and the ancestral phenotype of jawed vertebrates

    Benedict King, Martin Rücklin
    The ancestor of all known jawed vertebrates possessed a maxilla and premaxilla and was similar in morphology to the 'maxillate placoderms' from China.
    1. Evolutionary Biology

    Rapid diversification associated with a macroevolutionary pulse of developmental plasticity

    Vladislav Susoy et al.
    Evolutionary novelty is promoted by a macroevolutionary pulse of developmental plasticity, but is enhanced by secondary fixation, which permits developmental character release and further morphological exploration.

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